Preparation method of nanotube composite wire containing PBC (Poly Butylene carbonate)

A composite technology of polybutylene carbonate and nanotubes, which is applied in the field of preparation of nanotube composite wires, can solve the problems of toughness and tensile strength that need to be further improved, and achieve smooth printing process, reduced average particle size, high The effect of aspect ratio

Inactive Publication Date: 2017-05-17

叶晓青

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AI-Extracted Technical Summary

Problems solved by technology

[0004] The direct application of pure PBS to 3D printing has the problem of heat shrinkage, and the main chain of P...

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Method used

[0058] F. The 1.75 ± 0.05mm extruded wire rod obtained in the E step is subjected to a 3D printing test, the printing temperature is 145° C., the printing process is smooth, the surface of the printed product is smooth and well-proportioned, the appearance is beautiful, and the size is stable.

[00...

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Abstract

The invention discloses a preparation method of a nanotube composite wire containing PBC (Poly Butylene carbonate). The technical scheme of the invention is that 1, a formula is prepared from the ingredients in percentage by weight: PBS (Poly Butylene Succinate), the PBC, PHB (Poly Hydroxy Butyrate), a polyolefin ionomer, halloysite nanotubes, a coupling agent, a nucleating agent, a chain extension agent and the like; 2, the preparation method comprises the steps of (1) drying; (2) material weighting; (3) kneading at a high speed; (4) melting and extruding; (5) cooling and tracking; (6) rolling and bundling. According to the preparation method of the nanotube composite wire containing the PBC, disclosed by the invention, a high polymer material which is suitable for 3D (Three-dimensional) printing is prepared by adopting completely degraded biological materials of the PBS and the halloysite nanotubes, and better tensile strength and better flexibility are obtained while lower printing temperature is obtained.

Technology Topic

IonomerBiological materials +12

Examples

Experimental program(2)

Example Embodiment

[0039] Example 1

[0040] A kind of 3D printing described in the present invention contain Polybutylene carbonate of The preparation method of nanotube composite wire is characterized in that: formula according to weight percentage:

[0041] PBS 34

[0042] Polybutylene carbonate 20

[0043] Polyhydroxybutyrate 16

[0044] Polyolefin ionomer 6

[0045] Halloysite Nanotubes 14

[0046] 1,1-Bis(4-bromophenyl)-3-(3-triethoxysilyl)propylurea 7

[0047] Silica 1

[0048] Phthalic anhydride 0.4

[0049] Trihydroxymethylpropane trimethacrylate 0.6

[0050] Tea polyphenol 0.5

[0051] White oil 0.5.

[0052] The preparation method includes the following steps:

[0053] A. Dry the PBS in a vacuum drying oven at 80°C for 12 hours;

[0054] B. According to the formula of step 1, weigh the dried PBS, polybutylene carbonate, polyhydroxybutyrate, Polyolefin ionomer, Halloysite nanotubes, 1,1-bis(4-bromophenyl)-3-(3-triethoxysilyl)propylurea, silica, phthalic anhydride, trihydroxymethylpropane Trimethacrylate, tea polyphenol, white oil;

[0055] C. Place the weighed components in a high-speed kneader, keep the rotation speed 3000 rpm/min, and stir at high speed for 25 minutes;

[0056] D. Mix well-mixed PBS, polybutylene carbonate, polyhydroxybutyrate, Polyolefin ionomer, Halloysite nanotubes, 1,1-bis(4-bromophenyl)-3-(3-triethoxysilyl)propylurea, silica, phthalic anhydride, trihydroxymethylpropane Trimethacrylate, tea polyphenols, and white oil are added to the feed port of the twin-screw extruder. The parameters of the twin-screw extruder are: 90°C in the first zone, 115°C in the second zone, 125°C in the third zone, and 135°C in the fourth zone. Five zone 133℃, speed 100rpm/min, extrusion granulation;

[0057] E. After drying the particles produced in step D, use a single-screw extruder to extrude into filaments. The temperature of the extruder is set to 90°C in the first zone, 110°C in the second zone, 130°C in the third zone, and 120°C in the fourth zone. , Get 1.75±0.05mm or 3±0.05mm extruded wire.

[0058] F. The 1.75±0.05mm extruded wire obtained in step E is subjected to a 3D printing test, the printing temperature is 145°C, the printing process is smooth, the surface of the printed product is smooth and uniform, the appearance is beautiful, and the size is stable.

[0059] G. The particles obtained in step D are dried and then injection molded. The injection molding samples are tested for tensile properties (GB/T1040.2-2006), bending strength (GB/T1446-2006) and impact properties (GB/T1943). -2008), the test results are shown in Table 1.

Example Embodiment

[0060] Example 2

[0061] A kind of 3D printing described in the present invention contain Polybutylene carbonate of The preparation method of nanotube composite wire is characterized in that: formula according to weight percentage:

[0062] PBS 38.6

[0063] Polybutylene carbonate 21

[0064] Polyhydroxybutyrate 16

[0065] Polyolefin ionomer 6

[0066] Halloysite Nanotubes 10

[0067] 1,1-Bis(4-bromophenyl)-3-(3-triethoxysilyl)propylurea 5

[0068] Calcium carbonate 1

[0069] Toluene diisocyanate 0.5

[0070] Trihydroxymethylpropane triacrylate 0.4

[0071] 1010 0.5

[0072] Stearic acid 1.

[0073] The preparation method includes the following steps:

[0074] A. Dry the PBS in a vacuum drying oven at 80°C for 12 hours;

[0075] B. According to the formula of step 1, weigh the dried PBS, polybutylene carbonate, polyhydroxybutyrate, Polyolefin ionomer, Halloysite nanotubes, 1,1-bis(4-bromophenyl)-3-(3-triethoxysilyl)propylurea, calcium carbonate, toluene diisocyanate, trihydroxymethylpropane triacrylate , 1010, stearic acid;

[0076] C. Place the weighed components in a high-speed kneader, maintain the speed of 4000 rpm/min, and stir at high speed for 20 minutes;

[0077] D. Mix well-mixed PBS, polybutylene carbonate, polyhydroxybutyrate, Polyolefin ionomer, Halloysite nanotubes, 1,1-bis(4-bromophenyl)-3-(3-triethoxysilyl)propylurea, calcium carbonate, toluene diisocyanate, trihydroxymethylpropane triacrylate , 1010, stearic acid is added to the feed port of the three-screw extruder, the parameters of the three-screw extruder are: zone 1 100℃, zone 2 113℃, zone 3 121℃, zone 4 132℃, zone 5 127℃, speed 80rpm/min, extrusion granulation;

[0078] E. After drying the particles produced in step D, use a single screw extruder to extrude into filaments. The temperature of the extruder is set to 95°C in the first zone, 110°C in the second zone, 130°C in the third zone, and 125°C in the fourth zone. , Get 1.75±0.05mm or 3±0.05mm extruded wire.

[0079] F. The 1.75±0.05mm extruded wire obtained in step E is subjected to 3D printing test, the printing temperature is 135°C, the printing process is smooth, the surface of the printed product is smooth and even, the appearance is beautiful, and the size is stable.

[0080] G. The particles obtained in step D are dried and then injection molded. The injection molding samples are tested for tensile properties (GB/T1040.2-2006), bending strength (GB/T1446-2006) and impact properties (GB/T1943). -2008), the test results are shown in Table 1.

[0081] Table 1. Performance test results of nanotube composites

[0082] sample Tensile strength (MPa) Flexural strength (MPa) Flexural modulus (MPa) Impact strength (kJ/m 2 )

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Classification and recommendation of technical efficacy words

High aspect ratio
Improves strength and hardness

Preparation method of nanotube composite wire containing PBC (Poly Butylene carbonate)

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

Examples

Example Embodiment

Example Embodiment

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Description & Claims & Application Information

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